Home / 21,947,506.40-30,287,230.80-12,157,921.28

Finding the Fourth Proportional to 21,947,506.40, 30,287,230.80 and 12,157,921.28

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Solution

The fourth proportional to 21,947,506.40, 30,287,230.80 and 12,157,921.28 is: 16,777,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947,506.40 : 30,287,230.80 = 12,157,921.28 : x
  2. Step 2: Convert to fraction form
    21,947,506.40/30,287,230.80 = 12,157,921.28/x
  3. Step 3: Cross multiply
    21,947,506.40x = 30,287,230.80 × 12,157,921.28
  4. Step 4: Simplify right side
    21,947,506.40x = 368,229,767,855,591.44
  5. Step 5: Solve for x
    x = 368,229,767,855,591.44/21,947,506.40
  6. Step 6: Final answer
    x = 16,777,749.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.